Tuft tube frame for weaving



Sept. 25, 1923.

E. F. HATHAWAY ET AL TUFT TUBE FRAME FOR WEAVING Filed Jan. 29 1925 Walter 3%.M

) til-44?.

Patented Sept. 25, 1923.

iaeaiaaf rarer castes.

EneAE F. HATHAWAY, OF WELLESLEY, AND VJALTEB BIXBY, OE BOSTON, MASSA- I OHUSETTS, ASsIeNo s To SEAWEIUT ENGINEERING COMPANY, OF BOSTON, MASSA: CHUSETTS, A CORPORATION 0E MASSACHUSETTS.

TUFT TUBE EEAME EOE WEAVING.

Application filedJanuary 29, 1923. Serial No. 615,512.

State of Massachusetts, and Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tuft Tube Frames for Weaving, of which the following is a specification.

This invention is concerned with the peration of removing from its carrier chain a tuft tube frame such as is used in weaving Axminster carpets or similar pile fabrics, and is intended to provide simple but absolutely effective means for assuring the removal of the tuft tube frame'from its carrier chain in case the suspension hangers should become wedgedor stuck in the chain during the weaving operation.

To this end the invention embraces a construction and arrangement of tube frame suspension means solocated as to be positively engaged by overhanging portions of the transfer cam or mechanism by which the frame is transferred from its carrier transfer mechanism and, the hook arm is effected in case, by reason of bending or breakage, the provision for lateral engagement should not be effectlve.

These and other features of theinvention will be particularly explained in the following specification and will be defined in the claims hereto annexed.

In the accompanying drawings:

Figure. 1 illustrates an assembled view in front elevation of one end of the tubeframe.

in its relation-to the portion of the transfer mechanism which latter shown partly in section.

Figure 2 1s anend elevatlon of the suspension members attached to the carrier bar. 7

Figure 3 is an end elevationof a modified form of hook arm.

Figure being a side elevation'showing that portion of the hook arm adjacent to the transfer-engaging projection or boss.

Figure 5 is a front elevation showing the carrier bar and the transfer mechanism in operative relation with lateral engagement between the tube frame and the transfer mechanism for-forcing down the tube frame from the chain. V t Figure 6 is a detail plan view partly in section on the plane indicated by broken line 6-6 on Figure 5. i I

Figure 7 is an end elevation'on the plane 77 of Figure 5. In the practice of tube frame weaving difficulty is sometimes experienced by the failure of the tube frame to descend along with "the transfer mechanism by its. ownweight when the chain-engaging hooks are released from engagement, an occurrence which may takeplace from a variety of ing absolutely certainthe disengagement of the tube frame from'the chain in case of of the carrier a projecting: ear 4 forming a bearing for the journal of the yarn-carryingspool.

, The'coop'erating suspension member comprisesa hook arm 5 made of material sufficiently rigid to avoid being distorted under stresses of ordinary usage. This hook arm 5, is provided at its upper end with the chainengaging hook 6, and at its lower end with an eye 7, forming a bearingsurroundiing orpartly surrounding a fulcral pin 9 which passes transversely through the carrierbar 1, adjacent to its lower corner.. A spring'8 normally presses the hook arm outward.

The usual transfer mechanism comprises a so-called transfer cam 12,which ha anprojecting lip 14, which overhangs said pro jecti'onf The transfer cani' moves inward pressing the hook arm against the bracket 2 so as torelease the hook by engagement with the chain' "after which the transfer mechanism descends carryingthe ends of the,'tube frame seated on its lower born 15 and'positioned. between its lateral wings lb,

In case binding of the parts prevents the weightof, the tube frame from descending with the transfer device, the projecting lug 1O willgb e enga'ged' ancl.temporarily interlocked with the descending lip 14, so that thetube frame will be pulled positively downward. As the hook arm 5 isinade of relatively rigid material it will readily sustain the strain of such downward pull withouthbuckling orjspringing away. from such engagement.

Thefconstruction may beniade. even more rigid if, ins tead of partly severing thepro-. jecting lug 12, itis struck'out as an integral boss'as shownat 10% in Figures 3fand a with V out severing any part of the metal in forming the projection.

Since the rigid hook arm is combined with a fulcral pin this affords additional means of positively effecting such interlock ing engagement. with the transfer, niech anism by merelylengthening eitherend of.

the fulcral' pin to be engagedby' a lateral.

overhanging portion. of the transfer mechanism, to wit. one ofthe side wings .16.

Figures 5, (Sand 7 illustrate the dc'tailsof this construction in' whichthefulcral pin 'ZfEf-is provided with a lateral projecting portion 7? disposed, when the transferomechanism moves horizontally 1nward,"to engage;

the carrier bar sothat the projecting portion of the pin lies between the horn15 and theoverhangingside wing16. 7 The advantage of providing the rigid mg "and carrying down and up again the;

hook arm and its fulcral pin with projections for engaging both the middle and side portions of the transfer cam or mechanism is that an accident which ordinarily would distort or injure one part is not likely to injure both, and in each case the transmission strain is ultimately brought to bear upon the carrier bar through the agency of the interior or protected portion ofvthe fulcral pin.

What we claim is:

1. In a tuft tube frame for weaving, the combination witha carrier bar and its suspension bracket, of arigid hook arm pivot-' ally fulcrumed to swing into an'd,out'df engagement with the tube frame carrier chain by action of'suitable transfer mechanism, and means disposed to be engaged. by anoverhanging part of thetransferj mechanism in its downward movement and trans- 55 mita downward pull on the tube frame through said fulcral connection, substa'ni tially as described. 2. In a tuft tube frame, the combination with a longitudinal carrier bar and its sus pension'bracket, of a pivotalhookmemb'er cooperatively combined with the suspension bracket to releasably engage th'ejfcarrier chain, said pivotal hook being provided with a projecting member arranged to be engaged by the transfer cam in its downward, move ment in order to insure the removal'of 'the tuft tube frame fromthe carrier chain',"sub'- stantially as described. a I 1 3. In a tuft tube frame for weaving, the combination with a longitudinal carrier bar and'its suspension bracket, of a pivotal hook-arm cooperatively associated the-rewithl to 'releasably engagea carrierch'aim-the fuljj cral pin of said hook arm being-extended laterally to be engaged by the transfer de vice as the transfer device moves downward whereby the removal of the frame from the chain is positively assured, substantially as described. Q

t. In atuft tube frame for weaving, the; combination with a longitudinal carrier bar andits suspension bracketyof a rigid hook'f arm pivotally fulcrumed to swing into and out of supporting engagement with a-car-- rier chain, the fulcral pin being extended to project into engagement with a latera lportion of suitable transfer r'n'echanism, saidf, pivotal hook arm also having a"supple-' mental transfer engaging projectionfstruck out from the scribed. V 5. 'A hookarm for the suspension bracket of a tuft tube frame jembr'acinga n arm of substantial rigid 'material provided with a chain-engaging hook at' one'endaiidla fill-.

arm stud, substantially as def cral'bearing at theother and having an, in

tegral boss projecting outwardly 'intermediate of its ends-to form temporaryin-" terlocking engagement with'an overhanging portion of frame-transferring mechanism to ing portion of the transfer device and acting 10 insure removal from'the carrier chain, subto transmit the downward movement of the stantially as described. transfer device through said pivotal fulcrum 6. In a tube frame for tuft weaving, the to the carrier bar, substantially as described. 5 combination With a carrier bar and its sus- In Witness whereof, We have subscribed pension bracket, of a rigid pivotal hook-arm the above specification.

and its fulcral support, and positive releas ing means comprising a projecting member EDGAR F. HATHAWAY. 7 arranged to lie in the path of an overhang- WALTER BIXBY. 

